a.College of Chemistry, Jilin University, Changchun 130012, China
b.Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
zsl@jlu.edu.cn
收稿:2022-02-28,
修回:2022-3-20,
录用:2022-4-5,
网络首发:2022-06-24,
纸质出版:2022-11-01
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Ma, Y. M.; Gao, F. X.; Zhang, S. L. Crystalline, rheological and mechanical enhancement in PBAT/PPC/silica nanocomposites with double percolation network. Chinese J. Polym. Sci. 2022, 40, 1482–1492
You-Mei Ma, Feng-Xiang Gao, Shu-Ling Zhang. Crystalline, Rheological and Mechanical Enhancement in PBAT/PPC/Silica Nanocomposites with Double Percolation Network[J]. Chinese Journal of Polymer Science, 2022, 40(11): 1482-1492.
Ma, Y. M.; Gao, F. X.; Zhang, S. L. Crystalline, rheological and mechanical enhancement in PBAT/PPC/silica nanocomposites with double percolation network. Chinese J. Polym. Sci. 2022, 40, 1482–1492 DOI: 10.1007/s10118-022-2753-x.
You-Mei Ma, Feng-Xiang Gao, Shu-Ling Zhang. Crystalline, Rheological and Mechanical Enhancement in PBAT/PPC/Silica Nanocomposites with Double Percolation Network[J]. Chinese Journal of Polymer Science, 2022, 40(11): 1482-1492. DOI: 10.1007/s10118-022-2753-x.
The percolation threshold of silica was reduced to as low as 5 wt%. The crystalline
rheological and mechanical properties of PPC composites were improved which should attribute to the formation of double percolation structure.
Nanocomposites of blends of biodegradable poly(butylene adipate-
co
-terephthalate) (PBAT) and sustainable poly(propylene carbonate) (PPC) with nanosilica were prepared by melt compounding method. PBAT/PPC blend was partially miscible system with sea-island structure
and nanosilica particles were selectively dispersed in the continuous phase PBAT matrix to form the double percolation network. The introduction of nanosilica into PBAT/PPC blend reduced the size of dispersed PPC phase
promoted the crystallization of PBAT in the nanocomposites
and increased the storage modulus of the nanocomposites. The study of rheological behaviors indicated that the double percolation network was formed at the nanosilica loading of 5 wt%
as a result
the nanocomposites exhibited the solid-like viscoelastic behavior and their relaxation time was extended. With the increase of the nanosilica content
the PBAT/PPC/silica nanocomposites displayed increased Young’s modulus and yield strength.
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